baber/WOPTO huggingface dataset:
Patent GB-725486-A (GB)
Title: Improvements in or relating to the method of operating a reciprocating internal combustion engine
IPC: F02M55/00
Filed: 1953-06-22
Abstract: 725,486. Supplying liquid-fuel starting and working cycles. TEXACO DEVELOPMENT CORPORATION. June 22,1953 [July 14, 1952] No. 17211/53. Classes 7 (2) and 7 (3). [Also in Group XXVIII] In a method of operating an engine wherein the combustion of fuel in a cylinder 10 is localized in a patch which is confined in one direction by air containing so little vaporized fuel that it is incombustible and in the opposite direction by products of combustion, comprising the steps of igniting the fuel by compression when the engine operates at low power, and at high power igniting the fuel by a solid member such as a glow plug 50A, and the latter being heated by the combustion of fuel within the cylinder, the shift from one type of ignition tc the other being automatic and dependent upor the degree to which the plug 50A is heated. The incoming air is caused to swirl in the cylindei by a semi-circular shroud 20A on the inlet valve 20, the swirl rate bearing a constant ratio. such as 6 : 1, to the engine speed. The fuel nozzle 30 sprays fuel into the air, for a period which is about 50 degrees of crankshaft rotation, to impregnate a localized segment and form the combustible patch, the fuel being sprayed at a rate which is correlated with the air swirl rate and density ; nozzle 30 is connected to a camoperated pump 34, (not shown) supplied with fuel from a tank 42 through a high-pressure pump 44, an accumulator 46 and a check valve 48. The glow plug 50A is positioned between 30‹-60‹ downstream of the nozzle 30 and the engine functions on the Diesel cycle until the plug 50A has attained a sufficient temperature to set up a flame front operation, the plug then igniting the mixture before compression-ignition can occur ; the engine, which has a compression ratio of 12 to 1, also works on the diesel cycle during idling. The fuel pump 34 is constructed to enable the point of initiation of injection to be varied to suit different engine loads (see Group XXVIII). Two fuel systems may be provided, each being identical with that previously described and feeding into the pump 34 through isolating valves, one system supplying fuel with a high cetane rating for starting purposes and the other providing low grade fuel for normal running. Specification 596,846 is referred to.
Patent GB-221899-A (GB)
Title: Method of shaping pyroxylin, celluloid and like materials
IPC: B29C55/24
Filed: 1923-07-03
Abstract: 221,899. Marks, E. C. R., (Listo Pencil Corporation). July 3, 1923. Drawings to Specification. Pencil and like. holders.-Parts of fountain pens, pencil holders, &c. are formed from tubes of celluloid or pyroxylin shaped and sized by a moulding process.
Patent GB-1185177-A (GB)
Title: Brake Pads and Brake-Pad Carriers for Disc Brakes
IPC: F16D65/092
Filed: 1967-09-05
Abstract: 1,185,177. Brake pad and carrier. ALFRED TEVES G.m.b.H. 5 Sept., 1967 [28 Jan., 1967], No. 17333/69. Divided out of 1,185,175. Heading F2E. A brake pad 1 and brake pad carrier is formed as one integral unit manufactured from a rectangular block of friction pad material and has a step portion forming part of the carrier which has a riser part 2 provided with suspension eyelets 3 for use in mounting the brake pad and carrier in a disc brake assembly. The carrier may be strengthened by a steel strip frame 4.
Patent GB-1510742-A (GB)
Title: Looms
IPC: D03D47/23
Filed: 1976-04-28
Abstract: 1510742 Shuttleless looms MECOUTIL 28 April 1976 [5 May 1975] 17366/76 Heading D1E A gripper shuttle 17 (Figs. 6 to 9) is inserted into the shed by a first rod 1, is transferred whilst in the shed to a second rod 1 simultaneously with the transfer from the second rod 1 to the first rod 1 of a second weftless gripper shuttle 17, and is then withdrawn from the shed to fully lay the weft by the second rod whilst the first rod with the weftless shuttle retracts to load its shuttle and repeat the cycle.
Patent GB-275190-A (GB)
Title: Improvements in or relating to a case or holder for dental accessories
IPC: A45D44/18
Filed: 1927-07-01
Abstract: 275,190. Tipton, E. S. July 27, 1926, [Convention date]. Hinged handles; fixing by dovetail and grooved members.-In a case or holder 1 for dental accesseries a tooth-brush 10 is hinged at one end of a lateral extension 8 of the case, the brush being folded into a recess 12 in the extension when not in use. The brush-head 19, Fig. 13, may be made removable from the hinged shank 17, Fig. 11, the head having a longitudinally-grooved tongue 21 which slidingly engages a slot 18 in the shank 17 while beads 23 on the tongue snap. into notches 22 in the edges of the slot.
Patent GB-470596-A (GB)
Title: Improvements in or relating to navigation aiding radio systems
IPC: G01S1/02
Filed: 1936-06-25
Abstract: 470,596. Directive wireless signalling. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. June 25, 1936, No. 17694. Convention date, June 25, 1935. [Class 40 (v)] Two cardioid fields which overlap to produce a guide line GL, Fig. 1, for naviga tion purposes are producec by varying the tuning of a single reflector R, Fig. 2 backing an energized aeria A. When the contact k is open, and the two tuning impedances A1, A2 are in circuit, the reflector pro duces one cardioid field when the contact is closed a " reversed field is radiated which is the mirror image of the first. The arrangement is designed to avoid the production of keying " clicks " which prevent the smooth merging of the A-N modulation notes along the guiding-line when two keyed reflectors are used. The impedances A1, A2 may be arranged in parallel instead of in series.
Patent GB-1150994-A (GB)
Title: Frequency Synthesizer.
Inventor: STRICKHOLM GEORGE EDWARD
IPC: H03B21/04
Filed: 1967-04-18
Abstract: 1,150,994. Electronic counters. SANDERS ASSOCIATES Inc. 18 April, 1967, No. 17807/67. Heading G4A. [Also in Division H3] In an arrangement for generating a number of harmonically related signals and comprising means for switching the signals one after another to an output circuit, the switching means are synchronized so that switching occurs when the signal to be switched from and the signal to be switched to have the same instantaneous phase and magnitude. The embodiment which is described comprises a frequency synthesized in which a master oscillator 10 of frequency ## drives a spectrum generator 12 which produces a spectrum of frequencies (n+1)#+0, (n+1) #+1##, (n+1)#+2## &c. on lines 0-9, where # is a multiple of ##. These harmonics are so phased that repetitive period occur at which they all have the same instantaneous phase and magnitude, e.g. zero as the basic frequency ##. The master oscillator 10 also drives a generator 20 producing the frequency #. The synthesizer comprises a number of stages S0, S1, S2 &c., each of which includes a mixer 18, one input of which can be derived from any of the lines 0-9 via a corresponding switch 16. The second input of each mixer is derived from the output of the mixer in the preceding stage via a corresponding divider 24, the division ratio n of which is, in the present digital example, 10. The first mixer, in the stage S 2  as shown, is, however, driven from the generator 20. Thus the mixer in the stage S 2  combines frequency # with (n - 1)#+mp#, where mp refers to the selected one of lines 0-9, to produce the sum nW+mp##. This, after division by n gives for injection into the mixer in the next stage: thus, if the arrangement comprises p stages, the final output from the mixer in stage S0 is Each of the switches 16 is driven from a corresponding counter 30; the counters 30 are connected in cascade, that in the first stage-S2 as shown-being driven from master oscillator 10 via frequency divider 32, gate 34 and variable delay means 38. The arrangement is such that upon initiation the output frequency is stepped successively over the whole frequency range of the synthesizer, commencing with frequency nw: the frequency at any instant is shown by indicator 40. Switching can be so timed, by means of the variable delay 38, as to occur when the frequency to be switched from and the frequency to be switched to have the same instantaneous phase and magnitude, so that switching transcents are not produced. The frequency sweep can be arrested by means of gate 34, which is opened from control source 36.
Patent GB-568468-A (GB)
Title: Improvements in and relating to piezo-electric crystals
IPC: H03H9/05
Filed: 1943-08-31
Abstract: 568,468. Piezo - electric crystals. TENENBAUM, B. Aug. 31, 1943, No. 17949/42. [Class 40 (v)] A flexural vibration crystal has the interior cut away to provide a space or spaces extending in the longitudinal direction of the crystal bar and is supported by terminal wires inserted into the hollow space and connected to internal metallic coatings. Figs. 3 and 5 show suitable forms of crystal. In Fig. 3, the interior of the crystal is cut away leaving two plates a<1>, a<2> joined by integral webs b<1>, b<2> which may be situated at the ends or at nodal points. Fig. 5 shows a form in which the crystal is divided into two plates a<1>, a<2> by grooves cut into each of the longer edges of the crystal to leave a central longitudinal web b. If the poles of an alternating supply are connected respectively to the metallized internal and external surfaces of the crystal, it will exhibit flexural vibrations dependent on the length and thickness of the crystal, which may suitably be an X-cut quartz. Fig. 6 shows a crystal of the form shown in Fig. 5, mounted for use as an oscillator. The crystal is supported by wires j<1>, j<2>, k<1>, k<2>, connected to the internal coatings and to rods m connected to a pair of pins o. The external coatings are connected by wires p and springs q to a second pair of pins r. An arrangement for a filter circuit is also described, Figs. 9 and 10 (not shown), in which the external electrodes are transversely divided to form input and output electrodes, the internal electrodes forming an earthed common electrode.
Patent GB-821290-A (GB)
Title: Improvements in and relating to automatic sprinkler installations
Inventor: ALLEN GEORGE
IPC: F16K15/03
Filed: 1957-06-06
Abstract: 821,290. Fire-extinguishing. HALL & CO. Ltd., M. June 6, 1957, No. 18070/57. Class 47 A dry pipe valve for a fire extinguishing sprinkler system includes a valve element 6 pivotally mounted on one end of a bell crank lever 7 on the opposite end of which is mounted a counterweight 17, the arrangement being such that although the valve element remains on its seating against small variations in the differential between the air and water pressures on opposite sides of the valve element, the is adapted, when the water pressure exceeds the air pressure by a predetermined value, to lift the valve element thereby opening the valve and thereafter maintaining it in an open positon.
Patent GB-1004363-A (GB)
Title: Improvements in or relating to aerosol dispensing devices
IPC: A61M15/00
Filed: 1963-05-07
Abstract: 1,004,363. Aerosol containers. P. MESHBERG. May 7, 1963 [May 7, 1962], No. 18085/63. Heading FIR. A resilient, shock absorbing housing 14, Fig. 1, e.g. of polyethylene, for a frangible aerosol container 10, e.g. of uncoated glass, has a closure 18 located by tongues 21, 22 and preventing ejection of the valve assembly 12 on breakage, and a valve actuating and dispensing assembly 30. Housing 14 has slots 17 for viewing the container contents, which may be fitted with shutters and also serve to vent the housing when breakage occurs. Dispensing assembly 30 is mounted on valve operating stem 13 and is slidable relative to closure 18. The container contents are discharged via a nozzle 33 and a sleeve 35 extendable from its retracted position shown, and guided by tongue and groove means. Sleeve 35 has a removable cap 40 and, when in its retracted position, prevents actuation of valve stem 13. In the embodiment of Fig. 9, e.g. for mouth or eye medication, dispensing head 230, e.g. of oval cross-section, is fixed to housing 214, and container 10 is movable within housing 214 by button 216 to operate valve stem 13. In another embodiment, this dispensing head is slidable relative to the housing to operate the valve stem. In the embodiment of Fig. 10, dispensing head 319 is slidable within housing 14 to operate valve stem 13, and has a hemispherical upper portion 320. Sleeve 328 is slidably guided on head 319 by tongue and groove means, so as to be movable from its inoperative position shown, to a position in alignment with nozzle 327. A removable cap 332 is provided.
Patent GB-182324-A (GB)
Title: Improvements in or relating to ice manufacturing apparatus
IPC: F25C1/08
Filed: 1921-07-05
Abstract: 182,324. Clough, R. E. July 5, 1921. Ice-making, plate systems and apparatus for. -Ice blocks are built up upon a plate g by the movement through a tank of water a of a hollow plate b through which a refrigerant is circulated by tubes k, k<1>. The block f is built up by the deposition of films e<1> which, as frozen by contact with the plate b, are automatically detached therefrom owing to the particular contour given to such plate. The plate b is attached to rcllers i running on guides j, and is moved by the expansive force of the freezing water or by the pull exerted on a cord m by a weight l or by both forces. Warm water is circulated through the plate g when the block is completed in order to remove it. In a modification the fixed plate is dispensed with and two hollow freezing plates used. In this arrangement a film of water is frozen between the two plates at the middle of the tank, the plates being thereupon caused to recede from each other and the ice block to grow in both directions. In further modifications, Figs. 6 and 7, the ice block may be built up upon a counterweighted plate g which sinks, Fig. 6, or rises, Fig. 7, as a fresh film forms upon the block at the end at which the hollow freezing-plate b is fixed. In these constructions in order to prevent adhesion of the ice films to the refrigerating plates b an air-lock c, Fig. 6, or a film of mercury or other non-adhesive conducting material c Fig. 7 is formed on the plate.
Patent GB-1182823-A (GB)
Title: Improvements in and relating to Tap-Changing Switches for Regulating Transformers.
IPC: H01H9/00
Filed: 1967-04-20
Abstract: 1,182,823. Regulating switches. SMIT NIJMEGEN ELECTROTECHNISCHE FABRIEKEN N.V. 20 April, 1967 [26 April, 1966], No. 18295/67. Heading H1N. The movable contacts, e.g. 5, 5<SP>1</SP> of the diverter switch of a transformer tap changer co-operate with angularly spaced fixed contacts 2, 4 arranged on the inside of an insulating cylinder 13 and are mounted on separate insulating sections 15, 15<SP>1</SP> pivoted at 17, 17<SP>1</SP> respectively to a rotary shaft 14. The sections 15, 15<SP>1</SP> may be rotated about axes 17, 17<SP>1</SP> to separate the movable contacts 5, 5<SP>1</SP> from the fixed contacts 2, 4 after removal of a frusto-conical spacing member 19, 21 from shaft 14. The radial separation of the contacts allows the shaft 14, insulating sections 15, 15<SP>1</SP> and movable contacts 5, 5<SP>1</SP> to be axially withdrawn from cylinder 13. The contacts 5, 5<SP>1</SP> are electrically connected and bridge contacts 2, 4 in one position and another pair of fixed contacts (not shown) in another angular position. Two pairs of movable contacts carried by sections 15, 15<SP>1</SP> are in parallel with contacts 5, 5<SP>1</SP>. Resistors not shown interconnect the contacts of each of the further pairs of contacts. More than two sections 15, 15<SP>1</SP> may be pivoted to the shaft.
Patent GB-907861-A (GB)
Title: Mould core loading device improvement
Inventor: WARKOCZEWSKI JOSEPH THOMAS
IPC: B22C9/10
Filed: 1961-05-19
Abstract: 907,861. Moulding-machines. GUSTINBACON MANUFACTURING CO. May 19, 1961, No. 18364/61. Class 83 (1). A method of loading the cores 20a into the small diameter holes 18 in a centrifugal casting mould 10 of the type described in Specification 847,454 which is referred to, comprises forming an annular space around the mould wall, and applying a vacuum to the space so that cores applied to the inner ends of the holes from the mould cavity are sucked into the holes. The cores protrude from the holes and after inspection are pushed back by hand. Tape 50 masks some holes while others are having cores fitted.
Patent GB-146402-A (GB)
Title: Improvements in the manufacture of ultramarine blue and lacquered colours
IPC: C09C1/32
Filed: 1920-07-02
Abstract: Lakes are made by liberating, in a mass of china clay, alumina and/or silica and combining the product with acid or basic aniline colouring matters, according as alumina or silica predominates. After treatment with acid sulphate of soda solution, sodium carbonate solution is added to precipitate alumina.  The paste is filtered and the residue, after washing, treated with sulphides of sodium and heated to boiling point with a solution of colouring matter.  To obtain siliceous blues the product of the acid sulphate reaction is extracted with water to remove the aluminium sulphate and the residue treated with carbonate as before.
Patent GB-381910-A (GB)
Title: Improvements in or relating to electrical power conversion systems
IPC: H02M7/44
Filed: 1932-06-29
Abstract: 381,910. Converting; valve circuits. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A. -(Assignees of Allgemeine Elektricitats- Ges. ; 2, Friedrich Karl-Ufer, Berlin.) June 29, 1932, No. 18400. Convention date, June 29, 1931. [Class 38 (ii).] In a parallel type inverter comprising valves 12, 13 fed from a D.C. circuit 10 through a switch 33 and supplying an A.C. circuit 11 through a transformer 17 a time delay is introduced between the closing of the switch 33 and the commencement of discharge in either of the valves by means of a resistance condenser combination 32, 27 connected in the grid circuit of the valves. The switch 33 has auxiliary contacts 331, 33<11> with which the switch arm momentarily contacts when the switch is being closed. This momentary contact, however, is sufficient to allow the condenser 27 to charge from the mains 10 in 'such a direction as to impose a negative potential on the grids of the valves 12, 13, thus preventing conduction until the charge has leaked away through the resistance 32. The duration of the delay may be adjusted by varying the value of the resistance or capacity and may be made equal to the heating-up time of the cathodes. The Specification states that the invention is applicable to series type inverters.
Patent GB-831930-A (GB)
Title: Electrolyte for aluminum reduction
IPC: C25C3/18
Filed: 1958-06-09
Abstract: 831,930. Electrolysis of alumina. ALUMINIUM LABORATORIES Ltd. June 9, 1958 [June 12, 1957], No. 18406/58. Class 41. An electrolyte for producing aluminium metal from alumina dissolved therein, consists of a molten mixture of cryolite and from 4-9% NaCl and a similar amount of calcium or magnesium fluoride or a mixture thereof. The cryolite components may vary from NaF/AlF 3  ratio of 1.1 to 1.6 to 1. The melt will dissolve up to 10% Al 2 O 3 .
Patent GB-700171-A (GB)
Title: Process for the colouration of artificial fibres
Filed: 1950-07-24
Abstract: Artificial fibres made of aromatic polyesters, e.g., polyethylene terephthalate, are dyed by treating them with an aqueous dispersion of an un-reduced vat dyestuff at a superatmospheric pressure and at a temperature above 100 DEG C.  One or more surface active substances or one or more swelling agents for the polyester may be added to the dyebath.  In an example, polyethylene terephthalate yarn is dyed with an aqueous dispersion of Caledon Red Violet 2RN at 162 DEG C. and 80 p.s.i. pressure. According to the Provisional Specification, fibres of other synthetic polymeric materials, e.g., polyamides, may be similarly dyed.  Specification 609,943 is referred to.
Patent GB-613388-A (GB)
Title: Improvements relating to the cylinder heads of internal combustion engines
IPC: F02B75/02
Filed: 1946-06-20
Abstract: 613,388. Cylinder heads. ENFIELD CYCLE CO., Ltd., and NOSSITER, C. F. June 20, 1946, No. 18503. [Class 7 (ii)] A cylinder head a, interchangeable for right- or left-hand mounting, has symmetrically arranged inlet and outlet passages a<1> and a2 and a lateral valve-tappet casing a<5>. Cooling ribs a<3> extend across the head, which has flat faces to provide for alternative attachment of a fan casing b having a passage therethrough for the attachment of an air cleaner c and a silencer d. The application is also described to opposed-cylinder engines rotating in either direction.
Patent GB-660181-A (GB)
Title: Improvements in or relating to safety devices for electric transformers
IPC: H01F27/14
Filed: 1949-07-13
Abstract: 660,181. Transformers. SOC. SAVOISIENNE DE CONSTRUCTIONS ELECTRIQUES. July 13, 1949 [July 20, 1948], No. 18523/49. Class 38 (ii). A protective device for an oil-filled transformer combined with an oil reservoir arranged above the transformer comprises a pipe b connecting the top of the transformer container A with the oil reservoir R, the pipe carrying a float relay B of the Buchholz or a similar type, the upper end of the pipe ending in the reservoir above the highest level of the oil therein and a second pipe c which starts from the lower part of the container A and passes through the reservoir R with which it communicates by means of two openings d, e disposed at differing heights. Thus, during normal operation, the transformer breathes only through the pipe c by means of cold and only slightly oxidized oil, any impurities which may be mixed with the returned oil being deposited at the bottom of the container and which do not therefore harm the transformer windings. The valve C, of the non-return type, allows oil to flow in both directions during normal operation but should a large flow commence from the reservoir to the container, such as would happen if the container A received damage, the valve closes to prevent such a flow from continuing. If a slight fault occurs in the transformer the Buchholz relay B operates in known fashion but if a major fault occurs, causing a sudden disturbance of the oil, the relay B will operate to trip a circuit breaker and at the same time oil will flow along the pipe c to rupture a frangible diaphragm which connects the pipe c to an explosion funnel E. The reservoir R communicates with the ambient atmosphere by means of a pipe f and an air dryer F.
Patent GB-129899-A (GB)
Title: Improvements in and relating to Supports and Boring Apparatus for Boring Central Apertures in Wooden Rods or the like.
Inventor: WILKINSON ALFRED
IPC: B27C3/08
Filed: 1918-11-13
Abstract: 129,899. Wilkinson, A., and Wilkinson, A. Nov. 13, 1918. Drilling-machines.-A device for drilling central holes in billiard cues and like wooden rods consists of a tube split at one end and shaped to form a bell-mouthed gripping device for the. rod closed by a spring or ring and split at the other end to receive a drilling-device G which may also be split to be gripped by the tube. An adjustable internally ribbed centring core F is placed midway of the tube to receive the end of the red. For small rods a coned ferrule is used with the centring cone. The drill may be fed by a screw and nut.
Patent GB-721019-A (GB)
Title: Improvements in or relating to mattresses
Inventor: LEWIS REGINALD GRIFFITH
IPC: A47C27/04
Filed: 1953-07-06
Abstract: 721,019. Mattresses. BEAUVALE BEDDING & UPHOLSTERY CO., Ltd. July 6, 1953, No. 18682/53. Class 52 (4). In a spring-interior mattress the marginal or roll-edge padding 121 is enclosed by an external fly-strip 109 the outer edge of which is stitched to the edge 112 of the facing of a quilted boxing.
Patent GB-218850-A (GB)
Title: A means for improving upholstered chairs
IPC: A47C7/34
Filed: 1923-07-21
Abstract: 218,850. Blundell, J. A. July 21, 1923. Spring surfaces.- A device for preventing and remedying the stretching of the spring - supporting canvas X and webbing Y of a seat bottom comprises two loops B, E of wire &c. looselv connected by four links C, and secured to the chair frame members by four links A.